Feisty - I pinched this from Paul Daffey:
For a good while during the early part of last century, Collingwood assigned numbers alphabetically, a practice that had little effect on Bruce Andrews, who wore No.1 over four seasons, but had a marked impact on Jack Regan, the prince of full-backs, who wore a total of 11 guernsey numbers: 27, 19, 20, 24, 25, 16, 22, 18, 23, 1 and 2. His final two numbers were in keeping with the developing tradition of the captain and the vice-captain wearing the lowest two numbers.
Harry Collier had begun the practice of taking the lowest number when he was named captain in 1935. Regan continued it when he took over the captaincy in 1940.
The tradition continued until 1979, when Ray Shaw kept his No.23 guernsey despite being named Collingwood captain.